CVE-2024-52516: nextcloud server Privilege Escalation

Description

Nextcloud Server is a self hosted personal cloud system. When a server is configured to only allow sharing with users that are in ones own groups, after a user was removed from a group, previously shared items were not unshared. It is recommended that the Nextcloud Server is upgraded to 22.2.11 or 23.0.11 or 24.0.6 and Nextcloud Enterprise Server is upgraded to 22.2.11 or 23.0.11 or 24.0.6.

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CVSS v3.1 Score

3.0

LOW

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N

Weakness Type (CWE)

CWE-269 CWE-269

Affected Products

Vendor	Product	Versions
nextcloud	nextcloud_server	26.0.0 — 26.0.13.9
nextcloud	nextcloud_server	27.0.0 — 27.1.11.9
nextcloud	nextcloud_server	28.0.0 — 28.0.9
nextcloud	nextcloud_server	28.0.0 — 28.0.9
nextcloud	nextcloud_server	29.0.0 — 29.0.5
nextcloud	nextcloud_server	29.0.0 — 29.0.5

References

Advisories & Patches

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-35gc-jc6x-29cm https://github.com/nextcloud/server/commit/142b6e313ffa9d3b950bcd23cb58850d3ae7cf34

Other References

https://github.com/nextcloud/server/pull/47180

Frequently Asked Questions

What is CVE-2024-52516? +

Nextcloud Server is a self hosted personal cloud system. When a server is configured to only allow sharing with users that are in ones own groups, after a user was removed from a group, previously shared items were not unshared. It is recommended that the Nextcloud Server is upgraded to 22.2.11 or 23.0.11 or 24.0.6 and Nextcloud Enterprise Server is upgraded to 22.2.11 or 23.0.11 or 24.0.6. It has a CVSS v3.1 base score of 3.0 (LOW).

How severe is CVE-2024-52516? +

CVE-2024-52516 has a CVSS v3.1 score of 3.0 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2024-52516? +

CVE-2024-52516 affects products from nextcloud, specifically: nextcloud_server. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-52516? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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